Cap for covering sink-strainers



(No Model.) v

J.=1 GARPENTBR.

-GAP POR GOVBRING SINK STRAINERS. No. 249,001. Patented Nov. 1,1881.

UNITED STATES PATENT CEEICE.

JOTHAM CARPENTER, OF JERSEY CITY, NEW JERSEY.

CAP FOR COVERING SINK-STRAINERS.

SPECIFICATION forming part of Letters Patent No. 249,001, dated November 1, 1881 Application filed September 7, 1881.

To all whom it may concern:

Beit known that LJOTHAM CARPENTER, of Jersey City, in the counity ot'Hudson and State of New Jersey, have invented a new and Improved Cap for Covering Sink-Strainers, of which the following is a specification.

The object of my invention is to prevent the escape ot' sewer-gas through the strainer ot' a sink.

The invention consists of a cap of cup shape provided with a grooved rim containing a rubber band or packing projecting from the rim, which cap is firmly held over the strainer of the sink by means ot' ascrew passing through the cap into a threaded aperture in the center of the strainer, whereby the rubber packing will be pressed firmly on the sink and Will prevent the escape ot sewer-gases.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

liigurelisaperspectiveviewot myimproved cap for covering sink-strainers, it being shown in an inverted position. Fig. Z is a cross-sectional elevation ofthe same and ofthe strainer.

The cap or cup-shaped vessel A, which may be circular, oval, square, oblong, or may have any suitable shape, is provided with a longitudiually-grooved rim, B, containing a rubber band or packing stlip, C, projecting a short distance from the edge ot'this grooved ring B. The cap A is provided with a central aperture, through which a winged screw, D, can be passed. The strainer E ot' a sink, F, washtub, wash-basin, &c., is provided with a central threaded aperture adapted to receive the screw D.

Sewer-gases are produced by the decomposition of the water in the waste-pipe, and as the water must remain in these waste-pipes some time before it can be decomposed, it will be found that the most sewer-gas is produced at night or at such times when the sink has not been used for a considerable period. To prevent the dangerous gases thus produced from passing into the bed-rooms and other rooms of a dwellingis the object of this invention.

The cap A is placed over the strainerin such a manner that the rubber band C will rest on (No model.)

ber band C doubling over, as shown, and formv ing an air-tightjoint. The sewer-gases rising through the strainer E can pass into the cap A, but cannot pass out of this cap in view of the close joint formed by the rubber band C. A like cap can be placed over the overiiowstrainer, as sewer-gases are also apt to pass through the same.

The cap A is preferably made of metal, but can be made of wood, hard rubber, 85e.

The outer wall, G, of the grooved rim B is higher than the inner wall, H. When the cap is held down on the sink this higher or deeper outer wall, G, presses the band C or packingstrip firmly on the sink.

Having thus fully described my invention, I claim as newanddesiretosecureby Letters Pat-- ent.-

l. As an improved article of manufacture, a cap for covering sink-strainers, consisting of a cup-shaped vessel having a grooved rim, the outer Wall ot which is higher or deeper than its inner wall, and provided with an elastic packing in said groove and with means forsecuring it to a sink, substantially as and for the purpose set forth.

2. Thecombination,with thecup-shaped vessel A, whose rim is provided with the higher or deeper outer wall, G, and the shorter inner wall, H, of the rubber band or packing-strip C, substantially as herein shown andldescribed, and for the purpose set forth.

3. The combination, with thccup-shaped vessel A, ot' the rubber band or packing-strip C, the higher or deeper outer wall, G, ot' the rim, and the inner shorter wall, H, ofthe rim, sub stantially as herein shown and described, and for the purpose set t'orth.

4. The combination, with the strainer E, ot the cup-shaped vessel A, provided with a packing, C, and ot' the screw D, substantially as herein shown and described, and for the purpose set forth.

JOTHAM CARPENTER.

Witnesses:

OsoAR F. GUNZ, C. SEDGWICK. 

